[Client] Slide pad attack button (Right stick)

[vicksonzero]

As a player I want an attack button that i can optionally aim so that i can choose to use my attack casually, or get fine adjustment of my aim

• The right side of the screen can initiate attack,
  • but later can be restricted to a smaller initiation area
• initiation area can be obstructed by other buttons, depending on priority
  • prepare for multiple action buttons
• drag slide pad to aim, but has dead zones
  • only start aiming when drag beyond certain distance
  • fires events each time it is dragged,
  • with a directional vector indicating its aim, and
  • a boolean indicating if it is auto aim or manual aim
• releasing the slide pad makes another event, optionally executing the attack
  • shoot bullet at player current facing direction, or
  • manual shoot bullet at another direction

Spec: https://github.com/vicksonzero/cook-engine/wiki/Client-Interface

optionally depends on #1 and #2

[vicksonzero]

optionally depends on #1 and #2